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Publication numberUS5940134 A
Publication typeGrant
Application numberUS 08/762,624
Publication dateAug 17, 1999
Filing dateDec 9, 1996
Priority dateDec 11, 1995
Fee statusLapsed
Also published asCN1123221C, CN1173957A, DE69609163D1, DE69609163T2, EP0808541A1, EP0808541B1, WO1997022206A1
Publication number08762624, 762624, US 5940134 A, US 5940134A, US-A-5940134, US5940134 A, US5940134A
InventorsGijsbrecht C. Wirtz
Original AssigneeU.S. Philips Corporation
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Marking a video and/or audio signal
US 5940134 A
Abstract
Method and arrangement for marking a video or audio signal to assign a classification to said signal, for example, to identify that the signal is authentic and may not be copied. The signal comprises at least two components (Y, UV) according to a predetermined standard (MPEG, PAL, NTSC). According to the invention, values are assigned to said components which in combination can normally not occur. For example, in black picture portions where Y, U and V are all zero, U and/or V are now wilfully made non-zero to constitute the watermark. Television receivers still display said black portion. The watermark is not lost when the signal is re-encoded and copied on a recordable disc. A player will not reproduce the copy because the watermark no longer corresponds with the "wobble key" of the new disc.
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Claims(15)
I claim:
1. A method of marking a video and/or audio signal which has at least two components, said components having values which are related according to a predetermined encoding standard; said method comprising the steps of:
identifying a region of said signal wherein a first of said components has a predetermined value; and
assigning to a second of said components a value in said region which, although in compliance with said standard, is nevertheless inconsistent with said predetermined value of the first of said components.
2. A method as claimed in claim 1 wherein, when the first of said components has said predetermined value in a region of said signal, the value of the second of said components in said region is irrelevant to compliance with said standard.
3. A method as claimed in claim 1, wherein said first and second components respectively represent luminance and chrominance components of said signal, and a predetermined non-zero value is assigned to the chrominance component in regions of said signal wherein the luminance component has a value of substantially zero.
4. A method of detecting whether a video signal which has at least two components is marked in accordance with a predetermined encoding standard relating to the relative values of said components; said method comprising the steps of:
determining whether there is a region of said video signal wherein a first of said components has a value of substantially zero; and
determining whether all other components of said video signal have non-zero values in said region, and in that event providing an output signal signifying that the video signal is marked in accordance with said standard.
5. A method as claimed in claim 4 wherein, when the first of said components is substantially zero in said region the values of the other video signal components in said region are irrelevant to compliance with said standard.
6. A method as claimed in claim 4, wherein said first component represents luminance and at least one of the other signal components represents chrominance, and said output signal is produced when the luminance component is substantially zero in a region of said video signal which includes at least one non-zero chrominance component.
7. A device for marking a video and/audio signal which has at least two components, said components having values which are related in accordance with a predetermined encoding standard; comprising:
detecting means for identifying a region of said signal wherein a first of said components has a predetermined value; and
mark generating means for assigning to a second of said components a value in said region which, although in compliance with said standard, is inconsistent with said predetermined value of said first component.
8. A device as claimed in claim 7 wherein, when the first of said components has said predetermined value in a region of said signal, the value of the second of said components in said region is irrelevant to compliance with said standard.
9. A device as claimed in claim 7, wherein said first and second components represent luminance and chrominance components of said signal, said predetermined value of the luminance component is substantially zero in said region, and a non-zero value is assigned to the chrominance component in said region.
10. A device for detecting whether a video and/or audio input signal having at least two components is marked in accordance with a predetermined encoding standard relating to the values of said components; comprising:
first detecting means for receiving said input signal and deriving therefrom a first detection signal indicating whether there is a region of said input signal wherein a first of said components has a substantially zero value;
second detecting means for also receiving said input signal and deriving therefrom a second detection signal signifying whether there is in said region a second component of said input signal having a non-zero value; and
calculating means coupled to said first and second detection means and responsive to the detection signals produced thereby to produce a marking signal when said first component has a substantially zero value in said region and said second component has a non-zero value in said region.
11. A device as claimed in claim 10, wherein when the value of said first component is substantially zero in said region the value of the second signal component is irrelevant to compliance with said standard.
12. A device as claimed in claim 10, wherein said first component represents luminance, said second signal component represents chrominance, and said marking signal is produced when in said region of the input signal the luminance is substantially zero and the chrominance has a non-zero value.
13. A video and/or audio signal which is marked to indicate a classification thereof, said signal having at least two components the values of which are related according to a predetermined encoding standard; said signal having a region wherein a first of said components has a predetermined value and a second of said components has a value which, although in compliance with said standard, is nevertheless inconsistent with said predetermined value of the first component.
14. A signal as claimed in claim 13 wherein, when the first of said components has said predetermined value in a region of said signal, the value of the second of said components in said region is irrelevant to compliance with said standard.
15. A signal as claimed in claim 13 wherein the first and second components represent luminance and chrominance respectively; and portions of said signal wherein the luminance value is substantially zero have a predetermined non-zero chrominance value.
Description
FIELD OF THE INVENTION

The invention relates to a method and arrangement for marking a video or audio signal. The invention also relates to a method and arrangement for decoding said marked signal and a recording medium on which said marked signal is recorded.

BACKGROUND OF THE INVENTION

Known methods of marking a video signal are disclosed in WO 93/00769 and EP-A 0 518 616. The known methods modify a video signal such that certain disturbances in the picture are introduced upon playback. It is also known to mark a video signal by adding data to the signal. One method is to accommodate data in the vertical blanking interval. Another method is to blank a rectangular picture portion and replace said picture portion by a sequence of white and black spots that can be detected by a photodiode in front of the picture tube.

Nowadays, the subject of marking a signal is especially relevant with respect to the copy protection of digital video discs. It is desirable to provide the signal with a detectable code ("watermark") so as to identify the signal as being authentic and to render reproduction of the signal possible under specified conditions only. Video disc players are envisaged that are adapted to playback authentic video discs only. They reproduce recorded program material only if the video signal's watermark corresponds with a code ("wobble key") physically embedded in a given groove of the disc and not provided on a recordable disc.

The prior art methods mentioned above are not suitable to fulfil this task. They rely on the different sync behavior of different types of domestic equipment, render it possible for a consumer to delete the watermark, or suffer from the disadvantage that the embedded mark affects the displayed signal.

OBJECT AND SUMMARY OF THE INVENTION

It is an object of the invention to mark a signal without introducing perceptible disturbances in the signal upon reproduction.

In accordance with the invention, the method of marking a video and/or audio signal comprising at least two components according to a predetermined standard, is characterized by the step of assigning values to said components which in combination cannot occur when the signal is generated according to said standard.

The invention exploits the property that particular combinations of component values never occur when real signals are generated. By wilful introduction of said combinations without offending the relevant standard, the signal is classifiable in such a manner that the classification can be detected by special detector means.

Generally, the assignment of otherwise not occurring component values may cause visible artifacts on screen. This is prevented in an embodiment of the invention, wherein the step of assigning comprises modifying a first of said components in a signal portion where a second of said components assumes a value for which the first of said component is redundant.

The first and second component may constitute the chrominance and luminance of a video signal, respectively. A preferred embodiment of the invention is characterized in that a predetermined non-zero chrominance value is assigned to signal portions for which the luminance value is substantially zero. When encoded by a standard (PAL or NTSC) encoder, black signal portions have both zero luminance and zero chrominance. However, a zero luminance value in combination with a non-zero chrominance value is not prohibited by the relevant television standard. By introducing said non-zero chrominance values in black portions, the signal can be marked. The mark can easily be detected by inspecting the luminance and chrominance values. Standard television equipment (receiver, recorder) processes the black signal portions as such.

As it is not known in advance whether and where a video signal comprises black signal portions, it is envisaged to suppress one of the top or bottom video lines of a frame or field, and to apply the method to said video line. For the duration of said line, a plurality of consecutive chrominance periods may together constitute a binary watermark code.

In the future, video programs will be stored on disc in a digital format. A method of watermarking digital signals, in particular MPEG2 encoded video signals, has been proposed in Applicant's European patent application 95202673.0, not published yet. However, watermarking a digital signal is not the complete solution to the complicated problem of preventing digital video discs from being illegally copied. Any recorded digital signal is eventually decoded into an analog format so as to be displayed by a television receiver. After decoding, a digital watermark is lost. Nobody can prevent a consumer from re-encoding the analog signal to a digital (MPEG2) signal and store it on a recordable disc. Now, the disc comprises a signal without watermark. Such a signal can not be distinguished from, inter alia, a home video.

The method according to the invention, when applied to the signal before being recorded on an authentic video disc, has the significant advantage that the watermark is not lost. The specific combinations of zero luminance and non-zero chrominance values constituting the watermark are perfectly acceptable for an MPEG encoder (their presence merely affects the coding efficiency slightly). A video disc player, which is arranged to check the embedded watermark against the disc's wobble key, reproduces the signal if the authenticity of the signal is acknowledged. However, if a consumer re-encodes the reproduced analog signal and records the encoded signal on a different recordable disc, the watermark is retained and no longer corresponds with the new disc's wobble key. Consequently, the video disc player will not reproduce the copy thus made.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1 and 2 show embodiments of arrangements for marking a signal in accordance with the invention.

FIG. 3 shows an arrangement for detecting a marked video and/or audio signal in accordance with the invention.

DESCRIPTION OF EMBODIMENTS

FIG. 1 shows one embodiment of an arrangement for marking a video and/or audio signal in accordance with the invention. In this Figure, reference numeral 1 denotes a video signal source which generates a conventional video signal in the form of a luminance component Y and two chrominance components U and V. The luminance component Y is directly applied to a conventional video encoder 2. The chrominance components are applied to said encoder via respective modification stages 3 and 4 which, in the present embodiment, are adders. The video encoder 2 encodes signal component Y and modified chrominance components U' and V' into a composite signal for transmission in accordance with a given standard such as PAL/NTSC/SECAM (analog) or JPEG/MPEG (digital).

The arrangement further comprises a black luminance detector 5 which produces a control signal Y=0 if the luminance value Y is substantially zero, i.e. if the corresponding picture area is black. The control signal Y=0 is applied to a mark generator 6 which, in response thereto, produces predetermined non-zero signal values u and v are. The values u and v added to the chrominance components U and V by adders 3 and 4, respectively. For natural video source material, the signal components Y, U and V from video signal source 1 are all zero in black picture areas. The arrangement provides that the video encoder 2 encodes Y'=0, U'=u≠0 and V'=v≠0 in said areas. For non-black picture areas, the mark generator 6 is inactive and the video encoder encodes Y'=Y, U'=U and V'=V as in conventional arrangements.

The arrangement shown in FIG. 1 relies on the presence of black signal portions in the picture. FIG. 2 shows a further embodiment of an arrangement which forces a predetermined signal portion of the picture to be black. FIG. 2 also illustrates that the modification stages 3 and 4 (which are adders in FIG. 1) may be switches. The arrangement shown in FIG. 2 operates as follows. During the predetermined signal portion (for example, the first or last active video line or portion thereof), the mark generator 6 controls a switch 8 to apply a luminance value Y=0 to the video encoder and, simultaneously, controls switches 3 and 4 to provide non-zero chrominance values U=u and V=v. The predetermined signal portion is defined by a timing circuit 7 which receives a conventional synchronization signal S from the video source and produces a timing signal SP which defines the period of time when the mark generator 6 is to be active.

The signal generated by the arrangements described above can be reproduced by conventional apparatuses. Experiments have shown that the black portions will be displayed as such. However, apparatuses such as video disc players can be designed to reproduce a watermarked signal only under special conditions, for example, if the signal has been recorded on a video disc having a specific "wobble groove". A significant advantage of the invention is that the watermark is not lost when the signal is re-encoded and copied on a recordable disc not having such a wobble groove. Accordingly, the player will not reproduce the signal from such a recordable disc.

FIG.3 shows an arrangement for detecting a marked video and/or audio signal in accordance with the invention. The arrangement comprises a conventional analog (e.g. PAL/NTSC/SECAM) or digital (e.g. MPEG) decoder 11 which decodes the luminance component Y and chrominance components U and V. The components are applied to respective zero detectors 12, 13 and 14, which generate a binary signal `1` if the relevant component is substantially zero. A combinational logic circuit 15 produces an output signal M if the luminance component Y is substantially zero and the chrominance components U and V are not both substantially zero. Because such combinations of component values cannot occur in natural video scenes, the output signal M indicates that the video signal has been marked and may be reproduced under specified conditions only.

In summary, a method and arrangement for marking a video or audio signal is disclosed to assign a classification to said signal, for example, to identify that the signal is authentic and may not be copied. The signal comprises at least two components (Y, UV) according to a predetermined standard (MPEG, PAL, NTSC). According to the invention, values are assigned to said components which in combination can normally not occur. For example, in black picture portions where Y, U and V are all zero, U and/or V are now wilfully made non-zero to constitute the watermark. Television receivers still display said black portion. The watermark is not lost when the signal is re-encoded and copied on a recordable disc. A player will not reproduce the copy because the watermark no longer corresponds with the "wobble key" of the new disc.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US4218697 *May 8, 1979Aug 19, 1980William LeventerDigital data transmission arrangement using a standard TV video
US5517252 *Oct 7, 1993May 14, 1996Deutsche Thomson-Brandt GmbhDevice for reproducing picture signals in letter-box format
US5627655 *Oct 28, 1994May 6, 1997Hitachi, Ltd.Recording apparatus and reproducing apparatus for video signals
US5668603 *May 22, 1996Sep 16, 1997Macrovision CorporationVideo finger print method and apparatus
JPH05153637A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6212325 *Oct 8, 1997Apr 3, 2001Sony CorporationMethod and apparatus for processing video signal and storage medium
US6268889 *Aug 27, 1997Jul 31, 2001Sony CorporationVideo signal processing apparatus and signal transmitting method
US6374036 *Oct 1, 1998Apr 16, 2002Macrovsion CorporationMethod and apparatus for copy-once watermark for video recording
US6516079 *Mar 15, 2000Feb 4, 2003Digimarc CorporationDigital watermark screening and detecting strategies
US6553129Apr 28, 2000Apr 22, 2003Digimarc CorporationComputer system linked by using information in data objects
US6571144Oct 20, 1999May 27, 2003Intel CorporationSystem for providing a digital watermark in an audio signal
US6594441 *Dec 1, 1999Jul 15, 2003Macrovision CorporationMethod and apparatus for video tag signal recovery using various techniques to regenerate and re-record the tag signal
US6640005 *Oct 21, 1999Oct 28, 2003Sharp Laboratories Of America, Inc.Method for inconspicuously adding tracking data in coded images
US6674874 *Nov 19, 1999Jan 6, 2004Canon Kabushiki KaishaData processing apparatus and method and storage medium
US6775392Apr 6, 2000Aug 10, 2004Digimarc CorporationComputer system linked by using information in data objects
US7024018Apr 23, 2002Apr 4, 2006Verance CorporationWatermark position modulation
US7123718Jun 16, 2000Oct 17, 2006Blue Spike, Inc.Utilizing data reduction in stegnographic and cryptographic systems
US7127744Mar 7, 2001Oct 24, 2006Digimarc CorporationMethod and apparatus to protect media existing in an insecure format
US7228060 *Mar 30, 2001Jun 5, 2007Matsushita Electric Industrial Co., Ltd.Copy guard method and digital broadcast receiving apparatus
US7239716 *Nov 8, 2001Jul 3, 2007Nec CorporationData insertion device and method of inserting data
US7260722Dec 28, 2001Aug 21, 2007Itt Manufacturing Enterprises, Inc.Digital multimedia watermarking for source identification
US7391691Aug 24, 2004Jun 24, 2008General Electric CompanyMethod for facilitating copyright protection in digital media and digital media made thereby
US7395211Aug 15, 2001Jul 1, 2008Dolby Laboratories Licensing CorporationModulating one or more parameters of an audio or video perceptual coding system in response to supplemental information
US7647502Nov 15, 2006Jan 12, 2010Wistaria Trading, Inc.Optimization methods for the insertion, protection, and detection of digital watermarks in digital data
US7660700Feb 9, 2010Blue Spike, Inc.Method and device for monitoring and analyzing signals
US7664263Jun 25, 2003Feb 16, 2010Moskowitz Scott AMethod for combining transfer functions with predetermined key creation
US7664264Sep 12, 2006Feb 16, 2010Blue Spike, Inc.Utilizing data reduction in steganographic and cryptographic systems
US7690041Mar 30, 2010Digimarc CorporationAssociating first and second watermarks with audio or video content
US7730317Nov 2, 2006Jun 1, 2010Wistaria Trading, Inc.Linear predictive coding implementation of digital watermarks
US7738659Feb 21, 2006Jun 15, 2010Moskowitz Scott AMultiple transform utilization and application for secure digital watermarking
US7761712Jul 20, 2010Wistaria Trading, Inc.Steganographic method and device
US7765403 *Jul 27, 2010Contentguard Holdings, Inc.System for controlling the distribution and use of rendered digital works through watermarking
US7770017Aug 3, 2010Wistaria Trading, Inc.Method and system for digital watermarking
US7779261Jan 3, 2007Aug 17, 2010Wistaria Trading, Inc.Method and system for digital watermarking
US7813506Mar 30, 2009Oct 12, 2010Blue Spike, IncSystem and methods for permitting open access to data objects and for securing data within the data objects
US7830915Nov 9, 2010Wistaria Trading, Inc.Methods and systems for managing and exchanging digital information packages with bandwidth securitization instruments
US7844074Jun 30, 2008Nov 30, 2010Wistaria Trading, Inc.Optimization methods for the insertion, protection, and detection of digital watermarks in digitized data
US7877609Nov 12, 2009Jan 25, 2011Wistaria Trading, Inc.Optimization methods for the insertion, protection, and detection of digital watermarks in digital data
US7930545Nov 15, 2006Apr 19, 2011Wistaria Trading, Inc.Optimization methods for the insertion, protection, and detection of digital watermarks in digital data
US7949494May 24, 2011Blue Spike, Inc.Method and device for monitoring and analyzing signals
US7953981May 31, 2011Wistaria Trading, Inc.Optimization methods for the insertion, protection, and detection of digital watermarks in digital data
US7970166Jun 28, 2011Digimarc CorporationSteganographic encoding methods and apparatus
US7987371Jul 9, 2008Jul 26, 2011Wistaria Trading, Inc.Optimization methods for the insertion, protection, and detection of digital watermarks in digital data
US7991188Aug 31, 2007Aug 2, 2011Wisteria Trading, Inc.Optimization methods for the insertion, protection, and detection of digital watermarks in digital data
US8046841Aug 21, 2007Oct 25, 2011Wistaria Trading, Inc.Steganographic method and device
US8060942 *Apr 27, 2004Nov 15, 2011Thomson LicensingFilm fingerprinting
US8095989Jan 10, 2012Digimarc CorporationAssociating first and second watermarks with audio or video content
US8104079Jan 24, 2012Moskowitz Scott AMethods, systems and devices for packet watermarking and efficient provisioning of bandwidth
US8121343Oct 10, 2010Feb 21, 2012Wistaria Trading, IncOptimization methods for the insertion, protection, and detection of digital watermarks in digitized data
US8160249Apr 17, 2012Blue Spike, Inc.Utilizing data reduction in steganographic and cryptographic system
US8161286Jun 21, 2010Apr 17, 2012Wistaria Trading, Inc.Method and system for digital watermarking
US8171561Oct 9, 2008May 1, 2012Blue Spike, Inc.Secure personal content server
US8175330Aug 18, 2011May 8, 2012Wistaria Trading, Inc.Optimization methods for the insertion, protection, and detection of digital watermarks in digitized data
US8205089Aug 6, 2009Jun 19, 2012Contentguard Holdings, Inc.System for controlling the distribution and use of rendered digital works through watermarking
US8214175Feb 26, 2011Jul 3, 2012Blue Spike, Inc.Method and device for monitoring and analyzing signals
US8224705Jul 17, 2012Moskowitz Scott AMethods, systems and devices for packet watermarking and efficient provisioning of bandwidth
US8225099Jul 17, 2012Wistaria Trading, Inc.Linear predictive coding implementation of digital watermarks
US8238553Mar 30, 2009Aug 7, 2012Wistaria Trading, IncSteganographic method and device
US8259938Jun 19, 2009Sep 4, 2012Verance CorporationEfficient and secure forensic marking in compressed
US8265276Dec 22, 2009Sep 11, 2012Moskowitz Scott AMethod for combining transfer functions and predetermined key creation
US8265278Sep 21, 2010Sep 11, 2012Blue Spike, Inc.System and methods for permitting open access to data objects and for securing data within the data objects
US8271795Sep 11, 2006Sep 18, 2012Blue Spike, Inc.Security based on subliminal and supraliminal channels for data objects
US8281140Oct 2, 2012Wistaria Trading, IncOptimization methods for the insertion, protection, and detection of digital watermarks in digital data
US8307213Nov 6, 2012Wistaria Trading, Inc.Method and system for digital watermarking
US8340348Dec 25, 2012Verance CorporationMethods and apparatus for thwarting watermark detection circumvention
US8346567Jan 1, 2013Verance CorporationEfficient and secure forensic marking in compressed domain
US8451086Jan 30, 2012May 28, 2013Verance CorporationRemote control signaling using audio watermarks
US8467525Jun 18, 2013Wistaria Trading, Inc.Steganographic method and device
US8473746Oct 14, 2011Jun 25, 2013Scott A. MoskowitzMethods, systems and devices for packet watermarking and efficient provisioning of bandwidth
US8526611Mar 19, 2012Sep 3, 2013Blue Spike, Inc.Utilizing data reduction in steganographic and cryptographic systems
US8533481Nov 3, 2011Sep 10, 2013Verance CorporationExtraction of embedded watermarks from a host content based on extrapolation techniques
US8538011Aug 29, 2006Sep 17, 2013Blue Spike, Inc.Systems, methods and devices for trusted transactions
US8538066Sep 4, 2012Sep 17, 2013Verance CorporationAsymmetric watermark embedding/extraction
US8542831May 4, 2010Sep 24, 2013Scott A. MoskowitzMultiple transform utilization and application for secure digital watermarking
US8549305Oct 27, 2010Oct 1, 2013Wistaria Trading, Inc.Steganographic method and device
US8549307Aug 29, 2011Oct 1, 2013Verance CorporationForensic marking using a common customization function
US8612765Mar 25, 2012Dec 17, 2013Blue Spike, LlcSecurity based on subliminal and supraliminal channels for data objects
US8615104Nov 3, 2011Dec 24, 2013Verance CorporationWatermark extraction based on tentative watermarks
US8681978Dec 17, 2012Mar 25, 2014Verance CorporationEfficient and secure forensic marking in compressed domain
US8682026Nov 3, 2011Mar 25, 2014Verance CorporationEfficient extraction of embedded watermarks in the presence of host content distortions
US8706570Jul 17, 2012Apr 22, 2014Scott A. MoskowitzMethods, systems and devices for packet watermarking and efficient provisioning of bandwidth
US8712728Mar 13, 2013Apr 29, 2014Blue Spike LlcMethod and device for monitoring and analyzing signals
US8726304Sep 13, 2012May 13, 2014Verance CorporationTime varying evaluation of multimedia content
US8739295Mar 7, 2012May 27, 2014Blue Spike, Inc.Secure personal content server
US8745403Nov 23, 2011Jun 3, 2014Verance CorporationEnhanced content management based on watermark extraction records
US8745404Nov 20, 2012Jun 3, 2014Verance CorporationPre-processed information embedding system
US8763144Jan 10, 2012Jun 24, 2014Digimarc CorporationAssociating first and second watermarks with audio or video content
US8767962Aug 11, 2012Jul 1, 2014Blue Spike, Inc.System and methods for permitting open access to data objects and for securing data within the data objects
US8774216Sep 28, 2010Jul 8, 2014Wistaria Trading, Inc.Exchange mechanisms for digital information packages with bandwidth securitization, multichannel digital watermarks, and key management
US8781121Mar 13, 2013Jul 15, 2014Blue Spike, Inc.Utilizing data reduction in steganographic and cryptographic systems
US8781967Jul 7, 2006Jul 15, 2014Verance CorporationWatermarking in an encrypted domain
US8789201Mar 12, 2013Jul 22, 2014Blue Spike, Inc.Secure personal content server
US8791789May 24, 2013Jul 29, 2014Verance CorporationRemote control signaling using audio watermarks
US8798268Mar 11, 2013Aug 5, 2014Blue Spike, Inc.System and methods for permitting open access to data objects and for securing data within the data objects
US8806517May 10, 2010Aug 12, 2014Verance CorporationMedia monitoring, management and information system
US8811655Sep 4, 2012Aug 19, 2014Verance CorporationCircumvention of watermark analysis in a host content
US8838977Apr 5, 2011Sep 16, 2014Verance CorporationWatermark extraction and content screening in a networked environment
US8838978Apr 5, 2011Sep 16, 2014Verance CorporationContent access management using extracted watermark information
US8869222Sep 13, 2012Oct 21, 2014Verance CorporationSecond screen content
US8923548Nov 3, 2011Dec 30, 2014Verance CorporationExtraction of embedded watermarks from a host content using a plurality of tentative watermarks
US8930719Jul 24, 2012Jan 6, 2015Scott A. MoskowitzData protection method and device
US9009482Sep 26, 2013Apr 14, 2015Verance CorporationForensic marking using a common customization function
US9021602Mar 11, 2013Apr 28, 2015Scott A. MoskowitzData protection method and device
US9070151Mar 12, 2013Jun 30, 2015Blue Spike, Inc.Systems, methods and devices for trusted transactions
US9104842Aug 24, 2007Aug 11, 2015Scott A. MoskowitzData protection method and device
US9106964Feb 8, 2013Aug 11, 2015Verance CorporationEnhanced content distribution using advertisements
US9117270Jun 2, 2014Aug 25, 2015Verance CorporationPre-processed information embedding system
US9153006Aug 15, 2014Oct 6, 2015Verance CorporationCircumvention of watermark analysis in a host content
US9171136Nov 17, 2014Oct 27, 2015Wistaria Trading LtdData protection method and device
US9189955Jul 28, 2014Nov 17, 2015Verance CorporationRemote control signaling using audio watermarks
US9191205Apr 22, 2014Nov 17, 2015Wistaria Trading LtdMultiple transform utilization and application for secure digital watermarking
US9191206Apr 22, 2014Nov 17, 2015Wistaria Trading LtdMultiple transform utilization and application for secure digital watermarking
US9208334Oct 25, 2013Dec 8, 2015Verance CorporationContent management using multiple abstraction layers
US9226048 *Feb 15, 2011Dec 29, 2015Dolby Laboratories Licensing CorporationVideo delivery and control by overwriting video data
US9251549Jul 23, 2013Feb 2, 2016Verance CorporationWatermark extractor enhancements based on payload ranking
US9258116May 7, 2014Feb 9, 2016Wistaria Trading LtdSystem and methods for permitting open access to data objects and for securing data within the data objects
US9262794Mar 14, 2014Feb 16, 2016Verance CorporationTransactional video marking system
US9270859May 6, 2014Feb 23, 2016Wistaria Trading LtdUtilizing data reduction in steganographic and cryptographic systems
US9292663Jun 24, 2014Mar 22, 2016Digimarc CorporationAssociating first and second watermarks with audio or video content
US9323902Dec 13, 2011Apr 26, 2016Verance CorporationConditional access using embedded watermarks
US20010037456 *Mar 7, 2001Nov 1, 2001Levy Kenneth L.Method and apparatus to protect media existing in an insecure format
US20020026587 *May 10, 2001Feb 28, 2002Talstra Johan CornelisCopy protection system
US20020106106 *Nov 8, 2001Aug 8, 2002Nec CorporationData insertion device and method of inserting data
US20020136527 *Mar 30, 2001Sep 26, 2002Junya NishizakaCopy guard method and digital broadcast receiving apparatus
US20020168087 *Apr 23, 2002Nov 14, 2002Verance CorporationWatermark position modulation
US20030123659 *Dec 28, 2001Jul 3, 2003Forstrom Howard ScottDigital multimedia watermarking for source identification
US20030218950 *Apr 10, 2003Nov 27, 2003Matsushita Electric Industrial Co., Ltd.Optical disk reproduction apparatus and optical disk reproduction controlling method
US20040024588 *Aug 15, 2001Feb 5, 2004Watson Matthew AubreyModulating one or more parameters of an audio or video perceptual coding system in response to supplemental information
US20050047321 *Aug 24, 2004Mar 3, 2005Haruhisa MaruyamaMethod for facilitating copyright protection in digital media and digital media made thereby
US20070047763 *Oct 20, 2006Mar 1, 2007Levy Kenneth LAssociating First and Second Watermarks with Audio or Video Content
US20070153025 *Dec 15, 2006Jul 5, 2007Mitchell Owen RMethod, apparatus, and system for encoding and decoding a signal on a viewable portion of a video
US20070248227 *Apr 27, 2004Oct 25, 2007Schultz Mark AFilm Fingerprinting
US20100026848 *Oct 30, 2007Feb 4, 2010Sakiko KakehiMoving picture imaging apparatus with zoom function, image processing and display method and program
US20100037061 *Feb 11, 2010Contentguard Holdings, Inc.System for controlling the distribution and use of rendered digital works through watermarking
US20100228857 *May 20, 2010Sep 9, 2010Verance CorporationMedia monitoring, management and information system
US20100313278 *Dec 9, 2010Levy Kenneth LAssociating first and second watermarks with audio or video content
US20120315011 *Feb 15, 2011Dec 13, 2012Dolby Laboratories Licensing CorporationVideo Delivery and Control by Overwriting Video Data
USRE44222May 14, 2013Scott MoskowitzMethods, systems and devices for packet watermarking and efficient provisioning of bandwidth
USRE44307Jun 4, 2012Jun 18, 2013Scott MoskowitzMethods, systems and devices for packet watermarking and efficient provisioning of bandwidth
EP1353331A2 *Apr 11, 2003Oct 15, 2003Matsushita Electric Industrial Co., Ltd.Optical disk reproduction apparatus and optical disk reproduction controlling method
WO2000057643A1 *Mar 14, 2000Sep 28, 2000Blue Spike, Inc.Utilizing data reduction in steganographic and cryptographic systems
WO2001029691A1 *Oct 12, 2000Apr 26, 2001Digital Harmony Technologies, Inc.System for providing a digital watermark in an audio signal
WO2001069518A1 *Mar 7, 2001Sep 20, 2001Digimarc CorporationDigital watermark screening and detection strategies
WO2005024821A1 *Aug 26, 2004Mar 17, 2005General Electric CompanyMethod for facilitating copyright protection in digital media and digital media made thereby
Classifications
U.S. Classification348/473, 386/E05.004, 386/260, 386/300
International ClassificationG11B20/10, G09C5/00, H04N5/91, G06T1/00, H04N5/913
Cooperative ClassificationH04N2005/91321, G11B20/00601, G06T1/0021, G11B20/00586, H04N21/8358, H04N5/913, G06T2201/0064
European ClassificationH04N21/8358, G06T1/00W, H04N5/913
Legal Events
DateCodeEventDescription
Mar 3, 1997ASAssignment
Owner name: U.S. PHILIPS CORPORATION, NEW YORK
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WRITZ, GIJSBRECHT C.;REEL/FRAME:008383/0692
Effective date: 19970127
Jan 28, 2003FPAYFee payment
Year of fee payment: 4
Jan 25, 2007FPAYFee payment
Year of fee payment: 8
Mar 21, 2011REMIMaintenance fee reminder mailed
Aug 17, 2011LAPSLapse for failure to pay maintenance fees
Oct 4, 2011FPExpired due to failure to pay maintenance fee
Effective date: 20110817